Search found 178 matches

Hi Martin, thanks for your reply!Re: your reply: "Deformation" as in "refitting"? How many triangles can you rebuild per frame, and is this done on the GPU? And could you say something about the ray throughput of the system for average scenes (~100k tris or so)?

I've been reading some materials and watching videos on DXR over the past couple of days. Some observations: - The good looking demos use 3 or 4 Titan V's. - In all cases, it's rasterization as a basis with ray tracing effects added. - All motion is rigid, i.e. no acceleration structure reconstructi...

Hi all, We are organizing the industry talks session this year at Eurographics, which will be held next April in Delft, and we are looking for companies interested in giving a talk in this session. The idea of Eurographics Industry Talks is to highlight state-of-the-art computer graphics development...

Out of curiosity, because it sounds like I'm doing something very similar and back when I was investigating it I saw no bias issues, what is the RIS trap? Is RIS conceptually flawed or is it a reoccurring 'gotcha' that you keep forgetting? I used RIS for my light sources in the past: out of e.g. 1k...

You can easily test whether this indeed is the problem by using a light selection probability that is only a function of deterministically known things at the shading point (i.e. every time you land at this point you will compute the exact same light selection probability). That is indeed correct: ...

Just to be sure, the sample you're taking to calculate the probabilities is being discarded right after that and not being reused? Correct. Out of curiosity, how do you notice that there's bias? Well the setup is a simple box with a single-sided quad light well below the ceiling. One side of the bo...

Thanks for your replies. When your ray stumble upon a light source and you want to do MIS, you need to know the probability of it being selected. It's impossible to know if that probability without having sampled random points on all other light sources in your sampling method. I'm not sure if doing...

Hi all, I have a question about something that I can't seem to wrap my head around. Here's the situation: In a unidirectional path tracer with next event estimation and MIS lights can be reached by a random bounce and by explicitly sampling the light source. For MIS I thus take both pdfs into consid...